Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.
Search on plain tags, ratings, names, and problem text. Example: brute force or binary search
< 1 2 3 4 5 6Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 55215 | Skibidus and Amog'u | brute force constructive algorithms implementation strings | Statement | A | Codeforces Round 1003 (Div. 4) {2065} | PROGRAMMING | Video Tutorial | ||
| 1953 | Bro Thinks He's Him | combinatorics data structures dp matrices | Statement | H | Codeforces Round 1003 (Div. 4) {2065} | PROGRAMMING | Video Tutorial | ||
| 11900 | Skibidus and Rizz | constructive algorithms greedy | Statement | E | Codeforces Round 1003 (Div. 4) {2065} | PROGRAMMING | Video Tutorial | ||
| 41860 | Skibidus and Ohio | strings | Statement | B | Codeforces Round 1003 (Div. 4) {2065} | PROGRAMMING | Video Tutorial | ||
| 1472 | Mascot Naming | brute force greedy strings | Statement | F | European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {2068} | PROGRAMMING | 140239 | ||
| 7000 | Palindrome Shuffle | binary search greedy hashing strings two pointers | Statement | D | Educational Codeforces Round 174 (Rated for Div. 2) {2069} | PROGRAMMING | 139774 | ||
| 1893 | A, B, AB and BA | constructive algorithms greedy sortings strings | Statement | E | Educational Codeforces Round 174 (Rated for Div. 2) {2069} | PROGRAMMING | 139774 | ||
| 367 | Friends and Pizza | Statement | F | Educational Codeforces Round 175 (Rated for Div. 2) {2070} | PROGRAMMING | Video Tutorial | |||
| 1834 | Game with Binary String | data structures divide and conquer games greedy math | Statement | E | Educational Codeforces Round 175 (Rated for Div. 2) {2070} | PROGRAMMING | Video Tutorial | ||
| 27787 | The Play Never Ends | math number theory | Statement | A | Codeforces Round 1007 (Div. 2) {2071} | PROGRAMMING | 500.0 | Codeforces Round 1007 (Div. 2) Editorial | |
| 30865 | Having Been a Treasurer in the Past, I Help Goblins Deceive | combinatorics constructive algorithms strings | Statement | B | Codeforces Round 1006 (Div. 3) {2072} | PROGRAMMING | Codeforces Round 1006 (Div. 3) Editorial | ||
| 44184 | Draw a Square | implementation | Statement | A | Codeforces Round 1009 (Div. 3) {2074} | PROGRAMMING | Codeforces Round 1009 (Div. 3) — Editorial | ||
| 23245 | Final Verdict | greedy math | Statement | A | Codeforces Round 1008 (Div. 2) {2078} | PROGRAMMING | 500.0 | Codeforces Round 1008 (Div. 1, Div. 2) Editorial | |
| 16506 | MIN = GCD | greedy math | Statement | B | Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2) {2084} | PROGRAMMING | 1000.0 | 141155 | |
| 23380 | Serval and String Theory | constructive algorithms implementation | Statement | A | Codeforces Round 1011 (Div. 2) {2085} | PROGRAMMING | 500.0 | Codeforces Round #1011 (Div. 2) Editorial | |
| 8330 | Even String | combinatorics dp math strings | Statement | D | Educational Codeforces Round 177 (Rated for Div. 2) {2086} | PROGRAMMING | Educational Codeforces Round 177 Editorial | ||
| 267 | Uppercase or Lowercase? | *special *special interactive | Statement | D | Kotlin Heroes: Episode 12 {2087} | PROGRAMMING | 141608 | ||
| 16328 | Pushing Balls | implementation | Statement | B | Codeforces Round 1012 (Div. 2) {2090} | PROGRAMMING | 1000.0 | Codeforces Round 1012 (Div.1, Div. 2, based on THUPC 2025 — Finals) Editorial | |
| 38818 | Olympiad Date | greedy strings | Statement | A | Codeforces Round 1013 (Div. 3) {2091} | PROGRAMMING | Codeforces Round 1013 (Div. 3) Editorial | ||
| 6827 | Mishkin Energizer | brute force constructive algorithms greedy implementation strings | Statement | D | Codeforces Round 1014 (Div. 2) {2092} | PROGRAMMING | 1750.0 | Codeforces Round #1014 (Div. 2) Editorial | |
| 428 | Andryusha and CCB | brute force constructive algorithms greedy math number theory strings | Statement | F | Codeforces Round 1014 (Div. 2) {2092} | PROGRAMMING | 3000.0 | Codeforces Round #1014 (Div. 2) Editorial | |
| 24690 | Lady Bug | implementation math | Statement | B | Codeforces Round 1014 (Div. 2) {2092} | PROGRAMMING | 750.0 | Codeforces Round #1014 (Div. 2) Editorial | |
| 3770 | Shorten the Array | binary search brute force data structures dfs and similar greedy strings trees two pointers | Statement | G | Codeforces Round 1016 (Div. 3) {2093} | PROGRAMMING | Codeforces Round 1016 (Div. 3) Editorial | ||
| 5856 | Hackers and Neural Networks | bitmasks brute force greedy | Statement | F | Codeforces Round 1016 (Div. 3) {2093} | PROGRAMMING | Codeforces Round 1016 (Div. 3) Editorial | ||
| 40679 | Ideal Generator | math | Statement | A | Codeforces Round 1016 (Div. 3) {2093} | PROGRAMMING | Codeforces Round 1016 (Div. 3) Editorial | ||
| 30722 | Simple Repetition | math number theory | Statement | C | Codeforces Round 1016 (Div. 3) {2093} | PROGRAMMING | Codeforces Round 1016 (Div. 3) Editorial | ||
| 23743 | Tung Tung Sahur | greedy strings two pointers | Statement | D | Codeforces Round 1017 (Div. 4) {2094} | PROGRAMMING | Codeforces Round 1017 (Div. 4) Editorial | ||
| 55787 | Trippi Troppi | strings | Statement | A | Codeforces Round 1017 (Div. 4) {2094} | PROGRAMMING | Codeforces Round 1017 (Div. 4) Editorial | ||
| 529 | Homework | bitmasks math matrices | Statement | D | Codeforces Round 1021 (Div. 1) {2097} | PROGRAMMING | 2000.0 | 142316 | |
| 8490 | Sports Betting | math sortings | Statement | A | Codeforces Round 1021 (Div. 1) {2097} | PROGRAMMING | 500.0 | 142316 | |
| 21339 | Dinner Time | constructive algorithms math | Statement | A | Codeforces Round 1024 (Div. 2) {2102} | PROGRAMMING | 250.0 | 142788 | |
| 19717 | The Picky Cat | sortings | Statement | B | Codeforces Round 1024 (Div. 2) {2102} | PROGRAMMING | 500.0 | 142788 | |
| 10479 | Median Splits | dp greedy | Statement | C | Codeforces Round 1019 (Div. 2) {2103} | PROGRAMMING | 1500.0 | 142149 | |
| 17611 | Binary Typewriter | greedy math | Statement | B | Codeforces Round 1019 (Div. 2) {2103} | PROGRAMMING | 1000.0 | 142149 | |
| 8005 | Unpleasant Strings | binary search data structures dp greedy strings | Statement | E | Educational Codeforces Round 178 (Rated for Div. 2) {2104} | PROGRAMMING | Educational Codeforces Round 178 Editorial | ||
| 711 | Numbers and Strings | brute force dfs and similar dp implementation math | Statement | F | Educational Codeforces Round 178 (Rated for Div. 2) {2104} | PROGRAMMING | Educational Codeforces Round 178 Editorial | ||
| 36256 | Dr. TC | brute force math | Statement | A | Codeforces Round 1020 (Div. 3) {2106} | PROGRAMMING | Codeforces Round 1020 (Div. 3) Editorial | ||
| 4402 | Goblin | dp dsu greedy math | Statement | F | Codeforces Round 1020 (Div. 3) {2106} | PROGRAMMING | Codeforces Round 1020 (Div. 3) Editorial | ||
| 1757 | Binary String Wowee | combinatorics dp strings | Statement | E | Codeforces Round 1025 (Div. 2) {2109} | PROGRAMMING | 2500.0 | Codeforces Round 1025 (Div. 2) Editorial | |
| 26864 | It's Time To Duel | implementation | Statement | A | Codeforces Round 1025 (Div. 2) {2109} | PROGRAMMING | 500.0 | Codeforces Round 1025 (Div. 2) Editorial | |
| 2658 | Melody | dfs and similar graphs | Statement | E | Codeforces Round 1026 (Div. 2) {2110} | PROGRAMMING | 2250.0 | Codeforces Round 1026 (Div. 2) Editorial | |
| 27180 | Down with Brackets | strings | Statement | B | Codeforces Round 1026 (Div. 2) {2110} | PROGRAMMING | 750.0 | Codeforces Round 1026 (Div. 2) Editorial | |
| 5391 | Changing the String | binary search data structures greedy implementation sortings strings | Statement | E | Educational Codeforces Round 179 (Rated for Div. 2) {2111} | PROGRAMMING | Educational Codeforces Round 179 Editorial | ||
| 14528 | Good Start | math | Statement | B | Codeforces Round 1031 (Div. 2) {2113} | PROGRAMMING | 750.0 | Codeforces Round #1031 Editorial | |
| 2026 | Build an Array | bitmasks dp math number theory | Statement | G | Codeforces Round 1027 (Div. 3) {2114} | PROGRAMMING | 143268 | ||
| 30400 | Not Quite a Palindromic String | greedy greedy math math | Statement | B | Codeforces Round 1027 (Div. 3) {2114} | PROGRAMMING | 143268 | ||
| 21985 | Retaliation | binary search math | Statement | D | Codeforces Round 1029 (Div. 3) {2117} | PROGRAMMING | Codeforces Round 1029 (Div. 3) Editorial | ||
| 37829 | False Alarm | greedy implementation | Statement | A | Codeforces Round 1029 (Div. 3) {2117} | PROGRAMMING | Codeforces Round 1029 (Div. 3) Editorial | ||
| 280 | Shifts and Swaps | graphs hashing strings | Statement | F | Codeforces Round 1030 (Div. 2) {2118} | PROGRAMMING | 3500.0 | Codeforces Round 1030 (Div. 2) Editorial | |
| 18170 | Line Segments | geometry greedy math | Statement | B | Codeforces Round 1035 (Div. 2) {2119} | PROGRAMMING | 1000.0 | Codeforces Round 1035 (Div. 2) Editorial | |
| 20209 | Square of Rectangles | geometry math | Statement | A | Codeforces Round 1033 (Div. 2) and CodeNite 2025 {2120} | PROGRAMMING | 500.0 | Codeforces Round 1033 (Div. 2) and CodeNite 2025 Editorial | |
| 32415 | Above the Clouds | constructive algorithms greedy strings | Statement | B | Codeforces Round 1032 (Div. 3) {2121} | PROGRAMMING | Codeforces Round 1032 (Div. 3) Editorial | ||
| 5331 | Gangsta | data structures divide and conquer math sortings | Statement | G | Codeforces Round 1032 (Div. 3) {2121} | PROGRAMMING | Codeforces Round 1032 (Div. 3) Editorial | ||
| 14597 | Sponsor of Your Problems | greedy strings | Statement | E | Codeforces Round 1032 (Div. 3) {2121} | PROGRAMMING | Codeforces Round 1032 (Div. 3) Editorial | ||
| 19144 | Greedy Grid | constructive algorithms greedy | Statement | A | Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2) {2122} | PROGRAMMING | 500.0 | Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2) Editorial | |
| 3223 | Modular Sorting | brute force data structures math number theory | Statement | G | Codeforces Round 1034 (Div. 3) {2123} | PROGRAMMING | Codeforces Round 1034 (Div. 3) Editorial | ||
| 21739 | Binary String Battle | constructive algorithms games greedy | Statement | D | Codeforces Round 1034 (Div. 3) {2123} | PROGRAMMING | Codeforces Round 1034 (Div. 3) Editorial | ||
| 34749 | Tournament | greedy | Statement | B | Codeforces Round 1034 (Div. 3) {2123} | PROGRAMMING | Codeforces Round 1034 (Div. 3) Editorial | ||
| 41492 | Blackboard Game | math | Statement | A | Codeforces Round 1034 (Div. 3) {2123} | PROGRAMMING | Codeforces Round 1034 (Div. 3) Editorial | ||
| 19133 | Deranged Deletions | constructive algorithms sortings | Statement | A | EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2) {2124} | PROGRAMMING | 500.0 | EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2) Editorial | |
| 8046 | Make a Palindrome | greedy sortings | Statement | D | EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2) {2124} | PROGRAMMING | 1750.0 | EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2) Editorial | |
| 27869 | Difficult Contest | constructive algorithms implementation sortings strings | Statement | A | Educational Codeforces Round 181 (Rated for Div. 2) {2125} | PROGRAMMING | Educational Codeforces Round 181 Editorial | ||
| 16916 | G-C-D, Unlucky! | math number theory | Statement | E | Codeforces Round 1037 (Div. 3) {2126} | PROGRAMMING | 144845 | ||
| 19570 | Mix Mex Max | constructive algorithms greedy math | Statement | A | Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} | PROGRAMMING | 500.0 | Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial | |
| 377 | Strict Triangle | graphs shortest paths | Statement | F | Codeforces Round 1039 (Div. 2) {2128} | PROGRAMMING | 4000.0 | Codeforces Round #1039 — Editorial | |
| 20470 | Leftmost Below | greedy | Statement | C | Codeforces Round 1039 (Div. 2) {2128} | PROGRAMMING | 1250.0 | Codeforces Round #1039 — Editorial | |
| 1655 | Interactive RBS (Hard Version) | binary search bitmasks constructive algorithms dp interactive | Statement | C3 | Codeforces Round 1040 (Div. 1) {2129} | PROGRAMMING | 750.0 | Codeforces Round 1040 (Div. 1, Div. 2) Editorial | |
| 3835 | Interactive RBS (Easy Version) | binary search bitmasks constructive algorithms interactive | Statement | C1 | Codeforces Round 1040 (Div. 1) {2129} | PROGRAMMING | 750.0 | Codeforces Round 1040 (Div. 1, Div. 2) Editorial | |
| 2485 | Interactive RBS (Medium Version) | binary search bitmasks constructive algorithms interactive | Statement | C2 | Codeforces Round 1040 (Div. 1) {2129} | PROGRAMMING | 750.0 | Codeforces Round 1040 (Div. 1, Div. 2) Editorial | |
| 4699 | Unjust Binary Life | binary search binary search data structures greedy greedy math two pointers | Statement | F | Codeforces Round 1042 (Div. 3) {2131} | PROGRAMMING | Codeforces Round 1042 (Div. 3) Editorial | ||
| 17007 | Adjacent XOR | greedy | Statement | E | Codeforces Round 1042 (Div. 3) {2131} | PROGRAMMING | Codeforces Round 1042 (Div. 3) Editorial | ||
| 21521 | Make it Equal | math number theory | Statement | C | Codeforces Round 1042 (Div. 3) {2131} | PROGRAMMING | Codeforces Round 1042 (Div. 3) Editorial | ||
| 43105 | Homework | brute force implementation strings | Statement | A | Codeforces Round 1043 (Div. 3) {2132} | PROGRAMMING | Codeforces Round 1043 (Div. 3) Editorial | ||
| 511 | Famous Choreographer | hashing strings | Statement | G | Codeforces Round 1043 (Div. 3) {2132} | PROGRAMMING | Codeforces Round 1043 (Div. 3) Editorial | ||
| 30849 | Redstone? | brute force implementation math | Statement | A | Codeforces Round 1044 (Div. 2) {2133} | PROGRAMMING | 500.0 | Codeforces Round 1044 (Div. 2) Editorial | |
| 26457 | Painting With Two Colors | constructive algorithms implementation math | Statement | A | Codeforces Round 1045 (Div. 2) {2134} | PROGRAMMING | 500.0 | 145832 | |
| 241 | Beyond the Palindrome (Easy Version) | combinatorics dp math | Statement | E1 | Codeforces Round 1046 (Div. 1) {2135} | PROGRAMMING | 3000.0 | Codeforces Round 1046 (Div. 1, Div. 2) Editorial | |
| 155 | Beyond the Palindrome (Hard Version) | combinatorics dp math number theory | Statement | E2 | Codeforces Round 1046 (Div. 1) {2135} | PROGRAMMING | 2000.0 | Codeforces Round 1046 (Div. 1, Div. 2) Editorial | |
| 26012 | In the Dream | greedy math | Statement | A | Codeforces Round 1046 (Div. 2) {2136} | PROGRAMMING | 500.0 | Codeforces Round 1046 (Div. 1, Div. 2) Editorial | |
| 3340 | Maple and Tree Beauty (Hard Version) | bitmasks brute force dfs and similar divide and conquer dp fft trees | Statement | C2 | Codeforces Round 1048 (Div. 1) {2138} | PROGRAMMING | 750.0 | Codeforces Round 1048 (Div. 1, Div. 2) Editorial | |
| 5391 | Maple and Tree Beauty (Easy Version) | dfs and similar dp graphs trees | Statement | C1 | Codeforces Round 1048 (Div. 1) {2138} | PROGRAMMING | 1250.0 | Codeforces Round 1048 (Div. 1, Div. 2) Editorial | |
| 22167 | Shift Sort | greedy sortings strings | Statement | A | Codeforces Round 1049 (Div. 2) {2140} | PROGRAMMING | 500.0 | Codeforces Round 1049 (Div. 2) Editorial | |
| 255 | Perfect Cut | *special dp greedy | Statement | E | Kotlin Heroes: Episode 13 {2141} | PROGRAMMING | Kotlin Heroes 13 Editorial | ||
| 1878 | Make Good | constructive algorithms math strings | Statement | E | Codeforces Round 1051 (Div. 2) {2143} | PROGRAMMING | 2500.0 | Codeforces Round 1051 (Div. 2) Editorial | |
| 20620 | All Lengths Subtraction | two pointers | Statement | A | Codeforces Round 1051 (Div. 2) {2143} | PROGRAMMING | 500.0 | Codeforces Round 1051 (Div. 2) Editorial | |
| 909 | Bracket Groups | constructive algorithms dp strings | Statement | F | Educational Codeforces Round 182 (Rated for Div. 2) {2144} | PROGRAMMING | Educational Codeforces Round 182 Editorial | ||
| 15303 | Monocarp's String | binary search greedy strings | Statement | C | Educational Codeforces Round 183 (Rated for Div. 2) {2145} | PROGRAMMING | Educational Codeforces Round 183 Editorial | ||
| 15828 | Merging the Sets | greedy implementation | Statement | B | Codeforces Round 1052 (Div. 2) {2146} | PROGRAMMING | 1000.0 | Codeforces Round 1052 (Div. 2) Editorial | |
| 9658 | Rabbits | 2-sat dp graphs greedy implementation | Statement | C | Codeforces Global Round 29 (Div. 1 + Div. 2) {2147} | PROGRAMMING | 1500.0 | ||
| 19202 | A and B | strings | Statement | D | Codeforces Round 1054 (Div. 3) {2149} | PROGRAMMING | __rose | ||
| 80 | Counting Is Fun: The Finale | Statement | G | Codeforces Round 1053 (Div. 1) {2150} | PROGRAMMING | 4250.0 | Editorial of Codeforces Round 1053 (Div. 1, Div. 2) | ||
| 17888 | Incremental Subarray | strings | Statement | A | Codeforces Round 1053 (Div. 2) {2151} | PROGRAMMING | 500.0 | Editorial of Codeforces Round 1053 (Div. 1, Div. 2) | |
| 22499 | Bitwise Reversion | bitmasks | Statement | B | Codeforces Round 1057 (Div. 2) {2153} | PROGRAMMING | 750.0 | Codeforces Round 1057 (Div. 2) Editorial | |
| 16873 | Abraham's Great Escape | constructive algorithms graphs | Statement | B | Codeforces Round 1056 (Div. 2) {2155} | PROGRAMMING | 1000.0 | Codeforces Round 1056 (Div. 2) Editorial | |
| 3246 | Palindrome Flipping | brute force constructive algorithms implementation strings | Statement | D | Codeforces Round 1067 (Div. 2) {2158} | PROGRAMMING | 2000.0 | Codeforces Round 1067 (Div. 2) Editorial | |
| 15014 | Reverse XOR | bitmasks | Statement | C | Codeforces Round 1058 (Div. 2) {2160} | PROGRAMMING | 1250.0 | Codeforces Round 1058 Editorial | |
| 5337 | Make Connected | brute force dsu implementation | Statement | B | Pinely Round 5 (Div. 1 + Div. 2) {2161} | PROGRAMMING | 1000.0 | ||
| 774 | Left is Always Right | combinatorics math | Statement | E | Pinely Round 5 (Div. 1 + Div. 2) {2161} | PROGRAMMING | 3000.0 | ||
| 19482 | Souvlaki VS. Kalamaki | math sortings | Statement | A | Codeforces Round 1063 (Div. 2) {2163} | PROGRAMMING | 500.0 | Codeforces Round 1063 Editorial | |
| 4917 | Copy String | binary search greedy implementation strings | Statement | D | Codeforces Global Round 30 (Div. 1 + Div. 2) {2164} | PROGRAMMING | 1750.0 | Codeforces Global Round 30 Editorial | |
| 20677 | Sequence Game | brute force greedy | Statement | A | Codeforces Global Round 30 (Div. 1 + Div. 2) {2164} | PROGRAMMING | 500.0 | Codeforces Global Round 30 Editorial | |
| 41 | PalindromePalindrome | data structures strings | Statement | H | Codeforces Global Round 30 (Div. 1 + Div. 2) {2164} | PROGRAMMING | 5500.0 | Codeforces Global Round 30 Editorial | |
| 22738 | Same Difference | brute force dp strings | Statement | A | Codeforces Round 1064 (Div. 2) {2166} | PROGRAMMING | 500.0 | Codeforces Round 1064 (Div. 1, Div. 2) Editorial | |
| 57583 | Square? | math | Statement | A | Codeforces Round 1062 (Div. 4) {2167} | PROGRAMMING | Arpa Video Tutorial | ||
| 51213 | Your Name | sortings strings | Statement | B | Codeforces Round 1062 (Div. 4) {2167} | PROGRAMMING | Arpa Video Tutorial | ||
| 15978 | Drifting Away | implementation implementation implementation implementation implementation | Statement | B | Educational Codeforces Round 184 (Rated for Div. 2) {2169} | PROGRAMMING | Educational Codeforces Round 184 Editorial | ||
| 2301 | Binary Strings and Blocks | combinatorics dp | Statement | E | Educational Codeforces Round 185 (Rated for Div. 2) {2170} | PROGRAMMING | Educational Codeforces Round 185 Editorial | ||
| 7038 | Rae Taylor and Trees (hard version) | binary search constructive algorithms data structures dp dsu implementation trees | Statement | F | Codeforces Round 1065 (Div. 3) {2171} | PROGRAMMING | Codeforces Round 1065 (Div. 3) Editorial | ||
| 11420 | Rae Taylor and Trees (easy version) | binary search data structures dp dsu greedy implementation trees | Statement | D | Codeforces Round 1065 (Div. 3) {2171} | PROGRAMMING | Codeforces Round 1065 (Div. 3) Editorial | ||
| 65 | Gene Editor | Statement | G | 2025 ICPC Asia Taichung Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams) {2172} | PROGRAMMING | ||||
| 14103 | Needle in a Haystack | greedy strings two pointers | Statement | A | Codeforces Round 1069 (Div. 1) {2174} | PROGRAMMING | 500.0 | Codeforces Round 1069 Editorial | |
| 22733 | Optimal Shifts | bitmasks greedy strings | Statement | B | Codeforces Round 1070 (Div. 2) {2176} | PROGRAMMING | 1000.0 | Codeforces Round 1070 (Div.2) Editorial | |
| 25498 | Yes or Yes | brute force greedy strings | Statement | A | Good Bye 2025 {2178} | PROGRAMMING | 500.0 | ||
| 21455 | Impost or Sus | greedy implementation strings | Statement | B | Good Bye 2025 {2178} | PROGRAMMING | 750.0 | ||
| 5719 | Blackslex and Girls | constructive algorithms geometry math | Statement | E | Codeforces Round 1071 (Div. 3) {2179} | PROGRAMMING | Codeforces Round 1071 (Div. 3) Editorial | ||
| 34164 | Blackslex and Password | math strings | Statement | A | Codeforces Round 1071 (Div. 3) {2179} | PROGRAMMING | Codeforces Round 1071 (Div. 3) Editorial | ||
| 24451 | Ashmal | greedy strings | Statement | B | Codeforces Global Round 31 (Div. 1 + Div. 2) {2180} | PROGRAMMING | 750.0 | Codeforces Global Round 31 | |
| 3665 | Alphabet City | binary search math strings | Statement | A | 2025-2026 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {2181} | PROGRAMMING | Tutorial | ||
| 3257 | Medical Parity | dp | Statement | M | 2025-2026 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {2181} | PROGRAMMING | Tutorial | ||
| 25141 | New Year String | greedy implementation strings | Statement | A | Educational Codeforces Round 186 (Rated for Div. 2) {2182} | PROGRAMMING | Educational Codeforces Round 186 Editorial | ||
| 1098 | Jumping Man | combinatorics data structures dp trees | Statement | F | Hello 2026 {2183} | PROGRAMMING | 2750.0 | ||
| 1906 | Little String (Hard Version) | binary search combinatorics dp greedy math number theory | Statement | D2 | Codeforces Round 1075 (Div. 2) {2189} | PROGRAMMING | 750.0 | Codeforces Round 1075 (Div. 2) Editorial | |
| 3895 | Little String (Easy Version) | combinatorics dp math | Statement | D1 | Codeforces Round 1075 (Div. 2) {2189} | PROGRAMMING | 2000.0 | Codeforces Round 1075 (Div. 2) Editorial | |
| 808 | Majority Wins? | dp greedy math strings | Statement | E | Codeforces Round 1075 (Div. 2) {2189} | PROGRAMMING | 2500.0 | Codeforces Round 1075 (Div. 2) Editorial | |
| 10510 | Sub-RBS (Easy Version) | combinatorics constructive algorithms dp greedy strings two pointers | Statement | B1 | Codeforces Round 1073 (Div. 1) {2190} | PROGRAMMING | 750.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 3143 | Sub-RBS (Hard Version) | combinatorics dp games implementation matrices strings | Statement | B2 | Codeforces Round 1073 (Div. 1) {2190} | PROGRAMMING | 750.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 27547 | Array Coloring | constructive algorithms | Statement | A | Codeforces Round 1073 (Div. 2) {2191} | PROGRAMMING | 500.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 19690 | MEX Reordering | constructive algorithms sortings | Statement | B | Codeforces Round 1073 (Div. 2) {2191} | PROGRAMMING | 1000.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 17673 | String Rotation Game | brute force strings | Statement | A | Codeforces Round 1081 (Div. 2) {2192} | PROGRAMMING | 500.0 | Codeforces Round 1081 (Div. 2) Editorial | |
| 2002 | Swap to Rearrange | constructive algorithms dfs and similar graph matchings graphs greedy strings | Statement | E | Codeforces Round 1081 (Div. 2) {2192} | PROGRAMMING | 2250.0 | Codeforces Round 1081 (Div. 2) Editorial | |
| 14261 | Flipping Binary String | constructive algorithms strings | Statement | B | Codeforces Round 1081 (Div. 2) {2192} | PROGRAMMING | 1000.0 | Codeforces Round 1081 (Div. 2) Editorial | |
| 42295 | DBMB and the Array | brute force math | Statement | A | Codeforces Round 1076 (Div. 3) {2193} | PROGRAMMING | Разбор Codeforces Round 1076 (Div. 3) | ||
| 1024 | Remove the Grail Tree | dfs and similar dp greedy trees | Statement | H | Codeforces Round 1076 (Div. 3) {2193} | PROGRAMMING | Разбор Codeforces Round 1076 (Div. 3) | ||
| 24398 | Heapify 1 | implementation | Statement | B | Codeforces Round 1080 (Div. 3) {2195} | PROGRAMMING | Codeforces Round 1080 (Div. 3) Editorial | ||
| 34813 | Sieve of Erato67henes | math | Statement | A | Codeforces Round 1080 (Div. 3) {2195} | PROGRAMMING | Codeforces Round 1080 (Div. 3) Editorial | ||
| 274 | Fuzzy Concatenation (Easy Version) | binary search bitmasks brute force data structures greedy string suffix structures | Statement | E1 | Codeforces Round 1079 (Div. 1) {2196} | PROGRAMMING | 2000.0 | Tutorial | |
| 192 | Fuzzy Concatenation (Hard version) | binary search data structures dp greedy string suffix structures | Statement | E2 | Codeforces Round 1079 (Div. 1) {2196} | PROGRAMMING | 1000.0 | Tutorial | |
| 15685 | Array and Permutation | implementation sortings two pointers | Statement | B | Codeforces Round 1079 (Div. 2) {2197} | PROGRAMMING | 1000.0 | ||
| 20883 | Specialty String | brute force greedy strings | Statement | C | Codeforces Round 1084 (Div. 3) {2200} | PROGRAMMING | Codeforces Round 1084 (Div. 3) Editorial | ||
| 970 | Operation Permutation | combinatorics dp math probabilities | Statement | G | Codeforces Round 1084 (Div. 3) {2200} | PROGRAMMING | Codeforces Round 1084 (Div. 3) Editorial | ||
| 429 | Six Seven | divide and conquer math number theory strings trees | Statement | H | Codeforces Round 1084 (Div. 3) {2200} | PROGRAMMING | Codeforces Round 1084 (Div. 3) Editorial | ||
| 269 | ABBA Counting | fft math number theory strings | Statement | E | Codeforces Round 1082 (Div. 1) {2201} | PROGRAMMING | 3000.0 | Codeforces Round 1082 (Div. 1, Div. 2) Complete Editorial | |
| 10817 | ABAB Construction | greedy implementation | Statement | B | Codeforces Round 1082 (Div. 2) {2202} | PROGRAMMING | 1250.0 | Codeforces Round 1082 (Div. 1, Div. 2) Complete Editorial | |
| 16076 | Parkour Design | math | Statement | A | Codeforces Round 1082 (Div. 2) {2202} | PROGRAMMING | 750.0 | Codeforces Round 1082 (Div. 1, Div. 2) Complete Editorial | |
| 1506 | Simons and Dividing the Rhythm | dp string suffix structures strings | Statement | E | Codeforces Round 1083 (Div. 2) {2205} | PROGRAMMING | 2500.0 | Tutorial | |
| 39 | Deformed Balance | Statement | M | 2026 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {2206} | PROGRAMMING | Tutorial (PDF) | |||
| 1598 | N-MEX (Constructive Version) | constructive algorithms greedy | Statement | E1 | Codeforces Round 1085 (Div. 1 + Div. 2) {2207} | PROGRAMMING | 1750.0 | Codeforces Round 1085 (Div. 1 + Div. 2) Editorial | |
| 13240 | 1-1 | greedy strings | Statement | A | Codeforces Round 1085 (Div. 1 + Div. 2) {2207} | PROGRAMMING | 750.0 | Codeforces Round 1085 (Div. 1 + Div. 2) Editorial | |
| 19477 | Bingo Candies | constructive algorithms math | Statement | A | Codeforces Round 1086 (Div. 2) {2208} | PROGRAMMING | 500.0 | Tutorial | |
| 1665 | A Trivial String Problem | dp strings | Statement | E | Codeforces Round 1087 (Div. 2) {2209} | PROGRAMMING | 2250.0 | Codeforces Round 1087 (Div. 2) Editorial | |
| 297 | Binary Strings are Simple? | constructive algorithms dsu interactive number theory | Statement | E | Codeforces Round 1089 (Div. 2) {2210} | PROGRAMMING | 2750.0 | Codeforces Round 1089 (Div. 2) Editorial | |
| 1906 | A Simple RBS Problem | constructive algorithms strings trees | Statement | D | Codeforces Round 1089 (Div. 2) {2210} | PROGRAMMING | 2250.0 | Codeforces Round 1089 (Div. 2) Editorial | |
| 257 | Rational Bubble Sort | geometry greedy | Statement | G | Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2) {2211} | PROGRAMMING | 3250.0 | Nebius Round 2 and Codeforces Round 1088 Editorial |